/ Ruby on Rails
/
method

content_for?

content_for?(name)
public

content_for? simply checks whether any content has been captured yet using content_for Useful to render parts of your layout differently based on what is in your views.

Examples

Perhaps you will use different css in you layout if no content_for :right_column

<%# This is the layout %>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <title>My Website</title>
  <%= yield :script %>
</head>
<body class="<%= content_for?(:right_col) ? 'one-column' : 'two-column' %>">
  <%= yield %>
  <%= yield :right_col %>
</body>
</html>